Vietnamese Coriander
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| Vietnamese coriander | ||||||||||||||
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| Image:Laksa-bush.jpg | ||||||||||||||
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| Persicaria odorata Lour. |
Vietnamese coriander (Persicaria odorata, syn. Polygonum odoratum, Polygonaceae) is a herb of which the leaves are frequently used in Southeast Asian cooking. Other English names for the herb include Vietnamese mint, Vietnamese cilantro, Cambodian mint and hot mint. The Vietnamese name is rau răm, while in Malaysia and Singapore it is called daun kesom or daun laksa (laksa leaf). In Thailand, it is called pak pai (ผักไผ่). It is not related to the mints, but the general appearance and odor are reminiscent.
Above all, the leaf is identified with Vietnamese cuisine, where it is commonly eaten fresh in salads (including chicken salad) and in raw summer rolls (gỏi cuốn), as well as in some soups such as canh chua, and stews, such as fish kho tộ. It is also popularly eaten with hột vịt lộn (fertilized duck egg, known as balut in the Philippines).
In Singapore and Malaysia, the shredded leaf is an essential ingredient of laksa, a spicy soup, so much so that the Malay name daun laksa means "laksa leaf."
In Australia the plant is being investigated as a source of essential oil (kesom oil).
Characteristics
The Vietnamese coriander is a perennial plant that grows best in tropical and subtropical zones in warm and damp conditions. In advantageous conditions, it can grow up to 15 to 30 cm. In the winter or when the temperature is too high, it can wither.
The top of its leaf is dark green, with chestnut-colored spots while the leaf's bottom is burgundy red. Its stem has sections. In Vietnam it can be cultivated or found in the wild.
Components
Its oil contains aldehydes such as decanal (28%) and dodecanal (44%), as well as the alcohol decanol (11%). Sesquiterpenes such as α-humulene and β-caryophyllene comprise about 15% of its oil.
Medicinal uses
According to Vietnamese experts, Vietnamese Coriander has a bitter and spicy taste, is nontoxic, and can detoxify food[citation needed]. They claim that it can be used to treat swellings, acne, indigestion, flatulence, and stomachaches.[citation needed]
Effects on health
In many Vietnamese herbal remedies, it is used to repress sexual urges. There is a saying in Vietnamese, "rau răm, giá sống" ("Vietnamese coriander, live bean sprouts") meaning that Vietnamese coriander has the ability to reduce sexual desires, while bean sprouts have the opposite effect. Many Buddhist monks grow coriander in their private gardens and eat it frequently as a helpful step in their celibate life.
External links
- Vietnamese Coriander (Polygonum odoratum Lour.) page from Gernot Katzer's Spice Pages
- Kesom Oil – a New Essential Oil for the International Flavour and Fragrance Industry in First Australian New Crops Conference 1996 – Volume 2
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
